My Blackberry Curve 8520 has the screen frozen after I have tried to update one app. I tried all the methods to reset it:CTR+ALT+DEL, took the battery out, both the SIM and SD card. I have managed to restart it but then it has the same problem. The keyboard is blocked and I can't even access the menu and doesn't respond to any commands.

The error on the screen is : (application permissions , the application TWC standard is attempting to reset the security timer. Allow or deny)